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1. Most molecularbiologists think that viruses originated from fragements cellularnucleic acid. Which of the following observations supports this theory?
A) Viruses can infect both prokaryotic and eukaryoticcells'B) Viruses can reproduce only inside host cells.C) Viruses are enclosed in protein capsids rather than plasmamembranes.D) Viruses contains either DNA or RNA.E) Viral genomes are usualy more similar to the genome of thehost cell than to the genomes of viruses that infect other celltypes.2. Expression of a clonedeukaryotic gene in a bacterial cell involves many challenges. Theuse of mRNA and reverse transcriptase is part of a strategy tosolve the problem ofA) electroporationB) restriction fragment ligation.C) nucleic acid hybridization.D) post-transcriptional processing.E) post-translational processing.
how you would characterize a composition of a bacteria sample using metagenomic approaches. Trying to understand the bacteria inside ?
q1. mrs. mulligan goes to her dentist and after having a couple of cavities filled her dentist strongly suggests that
A 47 year old teacher goes to her physician complaining of dizziness, fainting, and shortness of breath. She appears pale and chronically ill. Her heart rate is 70/min supine and 68/min sitting and standing.
If you were to perform a full body immersion in 10 degree celcius water for several minutes, what would happen to your subject's blood pressure? Explain why this would occur physiologically.
How many different combinations of phenotypes could exist of these 7 paired traits . What proportion would be heterozygous in every trait after 2 years.
Discuss how much energy do methanogenic bacteria get from using glucose and hydrogen to form methane and water as the products?
what characteristics distinguish algae from other protists. Name at least one microorganism that is involved in each step of the carbon cycle in the presence and absense of oxygen. What is the greatest challenge facing toxicity testing in humans?
when adrenaline binds to adrenergic receptors on the surface of a muscle cell it activates a g-protein initiating a
A mammal uses only 1 to 2 percent of its energy in ventilation while a fish must spend about 15 percent of its energy to move water over its gills. Describe this huge difference in their efforts to collect oxygen.
The conversion of molecule S to productP has a Keq = 0.75. Two different, but relatedenzymes, A and B, can catalyzethe reaction. The product P serves as anallosteric inhibitor of enzyme B, but not ofenzyme A.
Consider a limpet that is grazing on algae on inter-tidal rocks along California’s coast. It is a calm, sunny day. When the tide is low during the late morning, the ocean waters recede and the limpet’s internal body temperature will increase.
What are the main orders of placental mammals? What are some representative species and distinguishing features of each of those orders?
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